Browser betas, like puberty, can be a confusing time. Sure, we're eager to be getting new functionality, but all the crashes and compatibility breaks and unrequited crushes can be a bit tough to handle. Now Mozilla is giving us something big for all our blood, sweat and acne: Firefox 4 Beta 5 has Direct2D hardware acceleration on by default. We tested it out real quick, and it seemed to speed up most HTML5 tasks considerably while inexplicably slowing a couple down, but we're sure all will be ironed out in time for the final version of Firefox 4 to go head to head with Microsoft's own upcoming hardware accelerated contender, IE9. Unf